Founded by legendary television producer Norman Lear, Declare Yourself is a nonprofit, nonpartisan voter registration campaign targeting 18-to-29-year-olds. Among the celebrities who have contributed video testimonials to the site are Ray Romano, Sarah Silverman, Larry David, Adam Brody, Christopher Mintz-Plasse and Hayden Panetierre.

"As an immigrant who is thrilled to exercise her right to vote in a presidential election for the first time, I wanted to do what I could to get other young people to participate," said Leone, 24. "There's no excuse not to register - DeclareYourself.com makes it so easy."

Declare Yourself registered 1.2 million young people in 2004 and has targeted 2 million registrations in 2008.